Oil filter



Feb. 8, 1949. w. J. KolNzAN 2,460,888

OIL FILTER Filed Deo. 1, 1944 2 Sheets-Sheet 1 7. 0A I o \6 A Inventar-/0 7 Feb. 8, 1949. w. J. KolNzAN 2,460,888

OIL FILTER Filed nec. '1, 1944 2 sheets-sheet 2 WW@ Hmm Patented Feb. 8,1949 vUNITED STATES PATEN'I' ori-lcs on. mm

Walter J. Kalman. Elgin, Nebr.

Application December l, 1944, Serial No. 568,178

lClaim.

My invention relates to oil filters for use on internal combustionengines for filtering the oil as it is pumped from the crankcase and isdesigned as an improvement over the iilter equipn ment forming thesubject matter of my U. s. Letwith the precise nature of my improvementswill be readily understoodl when the succeeding description'and claimare read with reference to the drawings accompanying and forming part ofthis specification.

In said drawings:

Figure 1 is a view in side elevation of a preferred embodiment of myimproved filter, a

Figure 2 is a view in top plan with the cap member removed.

Figure 3 is a view in vertical section taken on the line 3-8 of Figure2, and

Figure 4 is a fragmentary view in side elevation.

Referring to the drawings by numerals, in its preferred embodiment, myimproved filter comprises as its main elements a substantiallycylindrical, open-top shell I forming an oil iiltering bowl.

The shell I' has formed integrally therewith an upper, annular trough lembodying a substantially fiat bottom wall 4 and a side wall 8 spacedfrom the upper end of the shell I, concentrically thereof, and extendingabove the same. A nipple 6 extends radially outwardly from the side wall5 at the bottom ofthe trough 3 and which forms an extension of and opensinto a hollow heating dome l, upstanding from the bottom I of the troughl between the side wall 8 and the shell I, and is spaced below the rimof the shell, as shown in Figure 2.

'I'he nipple 8 and dome I form together a heat- I ing chamber 8, thelinner end of which is located in the trough 8 with its top below therimof the shell I. The outer end of the nipple 8 is closed by a coupling9 secured thereto by screws Il and for attaching the nipple to theexhaust pipe of the internal combustion engine, as by an inlet pipe IIthreaded into said coupling. A suitable (Cl. lO-122.5)

` thereof for connection of4 a return line I8 to the gasket I2 isinterposed between the nipple 8 and the coupling 8. A heat dischargeoutlet pipe I8 is threaded into an outlet nipple I4 depending from thebottom l of the trough 3 in vertical' alignment with the dome 1 andopening into the bottom of said dome. The shell I is'provided with avertical slot I8 therein extending downwardly from the rim to the top ofthe dome 1, centrally of the latter, said slot forming an overflowaperture for the escape of oil out of the shell I onto the top of thedome 'I and down the sides of the latter into the trough 8. A pluralityof upstanding teats I8 are provided on the top of dome I to retard theflow of oil thereover. Diametrically opposite the nipple 8 and dome 1the trough I is provided with a depending, internally'threaded outletnipple I1 in the bottom crankcase of the engine, not shown.

The trough l is closed by a dome-shaped cap member I8 fitting into thetop of said trough y, and undercut, as at 20, to seat upon the rim ofsaid trough 3. I'he cap member I'S is detachabiy secured in place bymeans presently described.

oil inlettube 2i extends upwardly into the shell I through the bottom ofthe same and is preferably threaded, as at 22, through a boss 2l on saidbottom, said tube extending in the axis of said shell I into the topthereof` and havingits lower end coupled, as at 24, to an oil inlet line25 adapted for connection to"an`oil pump, not shown, so that the oil ispumped to the tube 2I from the crankcase of the engine.

At a suitable point above the bottom of the shell I, the oil feed tube2| has fixed thereon a preferably circular oil spreader 26 of diskform'. Radial oil discharge ports 21 are provided in said tube 2Iimmediately below the spreader 26.

Threaded down on the upper end of the oil feed tube 2l to the level ofthe lower end of the slot I8 is a perforated disk 28 functioning to packa mass of filtering material 28 down in the shell I. The disk 28 isprovided with a pair of diametrical wings 20 on its upper side and uponopposite sides of the tube 2| for turning said disk on and ofi' saidtube.

On top of the cover cap I8 is a hollow wing nut 8l having turned intoone side thereof a laterally extending downturned vapor outlet nipplel2. The wing nut 8| forms part of means for securing the cap member I9in place, the remaining parts comprising a short tube 33 ex-` 2,4eo,ees

sleeve 35 coupling the lower end of the tube 33 to the upper end of theoil feed tube 2I. The tube 33 intermediate the cap I9 `and tube 2l isprovided with radial inlet ports 36 for the passage of vapor into thesame and to the nipple 33 by way of nut 3|.

Below thebottom I of trough 3 and the outer side of the shell l aplurality of webs 31 are provided forming cooling fins on said bottom.

Referring now to the operation of the described form of my invention,the oil pumped into the lower end of the oil feed tube 2I overilows outof the ports 21 into the shell I to rise through the filtering mass 29,being deflected outwardly by spreader 26 whereby an even flow of oil 'upthrough said mass is effected. The heavier solids not collected in themass of illtering material 29 sink to the bottom. of the shell I to bedrained out through a suitable drain plug 39. As the oil rises throughsaid 4mass 29 and above the disk .28, it escapesout of slot I5 to flowover the dome 1 into the trough 3, being heated by its passage over saiddome and cooled after it leaves :the region of said dome by the coolerbottom ofthe trough 3. As the oil passes over the dome l, under theaction of the heat therein, rapid evaporation of water or other dilutiontakes place, the vapors escapingout of tube 33, nut 3i and nipple 33.The thus purified oil iows out of the trough. 3 by way of dischargeoutlet nipple l-'l to be returned to the crankcase of the engine. Theheat in the chamber 9 isdischarged by Way of the outlet nipple I4 andthe outlet pipe I3.

The device may be easily disassembled for cleaning and repacking withfiltering material by turning the wing nut 3i to unscrew the sleeveI 35,thus removing the Wing nut 3l, cap I9, tube $3, sleeve 35 and nipple 32,as a unit. The disk 29 may then be removed so that the illtering massmay be replaced.

Suitable attaching ears as at 39 are provided on the device, asshown inFigures 1 and 2.

The foregoing will, it is believed, suffice to impart a clearunderstanding of my invention without further explanation.

Manifestly, modiiioations of the invention other than described hereinmay be resorted to without departing from the inventive concept, andright is herein reserved to such other modifications as 1. fall withinthescope of the subjoined claiin.

4 Having described the invention, what I claim is: I

In an oil iilter for internal combustion engines, a cylindrical open topcasing adapted to be disposed upright and forming a filtering chamber, altering mass in the bottom of said chamber, a slot in the rim of saidcasing forming an overflow outlet for filtered oil, an axial oil inlettube in said casing threaded through the bottom thereof for connectionto an oil pump whereby oil may ybe forced into said casing to risethrough said mass and overflow out of said slot, an annular troughsurrounding the upper part 0f said casing for catching the overow oiland having a bottom below the level of said slot and a side wall, anoutlet nipple in the bottom of said trough for connection to a returnline to the engine, a hollow heating dome rising from the bottom of saidtrough below said slotI to heat the oil thereon issuing from the slot,for vaporlzing water and gasoline contents of said oil, a nippleextending from said trough for` receiving exhaust heat from the engineand opening into said dome to heat the same, a closure cap for saidtrough covering the top of said casing, and means to secure said cap tosaid side wall comprising a perforated tube extending through the top ofsaid cap, a threaded sleeve coupling the perforated tube to the upperend of the oil inlet tube, a hollow wing nut threaded onto the upper endof the perforated tube and having a lateral tubular outlet tube therein,said perforated tube, wing nut and outlet tube forming an outlet passagefor the vaporized water and gasoline.

WALTER J. KOINZAN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,849,042 Pickard et al. v Mar.8, 1932 2,068,473 Schwalge Jan. 19, 193'? 2,088,243 Koinzan July 27,1937 2,206,358 Koinzan July 2, i940 2,274,132 Ehlers Feb. 24. 1942

